<p>I've used cheap arms in the past that could hardly pick up their own weight. This arm was a pleasant surprise with it's speed and ability to handle decent loads. However, I was only moving something like the weight of a small tablet. </p><p>The motion is pretty smooth. It was enough for my needs. Easy to use with ROS as well. Overall, I have been very satisfied. My only usage comment is that I would tape foam around it when first programming the arm. It's a pretty powerful arm to have it swing into itself with a user error.</p><p>I would recommend this arm as an affordable product for robotic experiments and testing...very good value.</p>